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SudokuSolve
Step-by-step hints that teach you — or solve it instantly
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easy
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hard
expert
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✏️ Pencil Marks
↩ Undo
💡 Hint
⚡ Solve
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How to play
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Click a cell, then tap a number or use your keyboard
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Hit Hint to learn the strategy behind each move
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Turn on Pencil Marks to see which numbers can go in each cell
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Red cells mean a conflict — same number in the row, column, or box
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Undo any move, or Cmd+Z on keyboard
📖 Learn Sudoku Strategies